Mining machinery.



PATENTED SEPT. 6, 1904.

E, S. BENNETT. MINING MACHINERY.

APPLICATION FILED OUT. 22, 1903.

N0 MODEL.

NITED STATES Patented September 6, 1904.

ERASTUS S. BENNETT, OF NEIV YORK, N. Y.

MINING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 769,461, datedSeptember 6, 1904.

Application filed October 22, 1903. Serial No. 178,115. (No model.)

To all whom, it rnayconcern:

Be it known that I, ERASTUS S. BENNETT, a citizen of the United States,residing at New York, State of New York, have invented certain new anduseful Improvements in Mining Machinery, of which the following is aspecification.

My invention relates to mining apparatus, and particularly to that formof such apparatus in which excavating means is supported on a caradapted to run upon a track, the said car supporting other heavymachinery or elements, such as a carrier for the material,separating-tanks, and the like. In the use of such a plant or apparatusit is necessary frequently to shift the boom in a direction laterally ofthe car, so that the dipper or shovel may reach the material desired,and in such case there is a tendency for the carbody to be tipped over,and this will occur unless some provision is made to prevent; and myinvention relates to means designed to support the car against any suchtendency.

My invention consists in the features and combination and arrangement ofparts hereinafter described, and particularly pointed out in theappended claims.

In the accompanying drawings, Figure 1 is a plan view of the invention;.Fig. 2, a side elevation; Fig. 3, a detail sectional view on line 3 3of Fig. 1 looking in the direction of the arrow; and Fight, a detailside view, partly in section, looking from the right of Fig. 3.

In the drawings, 1 indicates the car-body, and 2 the trucks on which thesame is carried. The trucks are combined with cross-beams 3 of I-irons&, each beam consisting of two of said I-irons arranged parallel witheach other and suitably secured in this relation to the car-body ortrucks. At the ends of the crossbeams and between the I-iron of whichthe beams are composed I arrange guideways 5 of any desired form, havingwalls 6 extending vertically and with an opening between them adapted toreceive a rack-bar 7, which is titted to the said guideway or channel soas to slide easily vertically, while yet being closely confined in thesaid channel to maintain its vertical position. The rack-bar at itslower end is provided with a foot 8, havbeing carried by a shaft 16,extending vertically and rotating in bearings 17 on a bracket 18,secured to the vertical web of one of the I-irons, the bracket beingadapted to fit also against the flanges of the said I-iron. The shaft 16has a hand-wheel at its upper end, as at 19, and by turning this shaftthe rackbar 7 may be thrust downwardly, so as to bear with its foot upona beam or other support which is placed under the said foot. Byreference to Fig. 1 it will be seen that there is 'one of theserack-bars at each end of each beam 3, and as these beams extend somedistance upon each side of the car-body or truck the practical elfect isto extend the base of the car-body a considerable distance toward theside thereof by simply operating the several hand-wheels to thrustdownwardly the rack-bars connected therewith, so as to form supports forthe carbody at these points. The rack-bars, with their associatedmechanism, may also be used as jacks to lift the carbody, with itstruck, from the track-rails, if this should be desired for any purpose.

By reference to Fig. 3 it will be seen that the worm is located betweenthe bearings 17, and in order to sustain the thrust a collar 20 isarranged below the worm, said collar having a V-shaped groove 21 in itslower side receiving antifriction-balls 22, which bear on awearing-piece 23, supported on the lower bar 17. This wearing piece orcollar has a spherical or curved upper surface upon which the ballsrest, and this form of surface serves to shed any sand or dirt therefromand prevent its accumulation in the ball-bearing. One advantage of thegearing, as shown, for operating the vertically-movable supportingbarsis that the operation thereof will not be interfered with by anyaccumulation of any sand or dirt, as the said gearing will clear itselffrom any such material which may fall thereon.

The described mechanism instead of being used simply as a side brace forthe car may be used as a leveling device therefor, and I show such a useof the mechanism, for instance, in an application for Letters Patentfiled in the United States Patent Oflice of even date herewith, andindeed in the present instance the mechanism can be used for leveling asWell as for bracing.

I claim as my invention 1. In combination with a car-body, avertically-movable rack-bar arranged to one side of the same, andworking in a support connected With the car-body, a gear-Wheel meshingwith the rack-bar, a Worm-wheel on the shaft of the gear-wheel and avertically-extending shaft and Worm thereon meshing with the Worm-Wheeland means for operating the vertically-extending shaft, substantially asdescribed.

2. In combination with the car-body, a vertically-movable rack-bararranged to one side of the same, and gearing for operating saidrack-bar comprising a gear meshing with the rack-bar and Worm-gearingfor operating the said gear, substantially as described.

3. In combination with a pair of I-irons forming a cross-beam extendingbeyond the car-body, a guideway secured between the said I-iron and heldby the upper and lower lateral flanges thereof, vertically movablerack-bar moving Within the said guideway, a shaft journaled in the saidI-irons, a gear on the shaft and means for operating the said shaft,substantially as described.

4:. In combination with the I-iron beams, a

vertically-movable rack-bar between the I- irons, a gear-Wheel, a shaftjournaled in the I-irons, and carrying the gear-Wheel, a Wormwheel onthe outer end of the said shaft, a bracket secured to the outer side ofone of the I-irons and a Worm-shaft journaled in the said brackets,substantially as described.

5. In combinationwith the-vertically-movable rack-bar, the car-body,supporting means extending from the car-body to the rack-bar, means foroperating the rack-bar vertically, consisting of gearing including aworm-Wheel and Worm, a shaft extending vertically and carrying the saidworm and a thrust-bearing for the said shaft consisting of a collarhaving a V-shaped groove on its under side, a Wearing-piece having acurved upper face and balls resting on the same and arranged in the V-shaped groove, substantially as described. 6. In combination with acar-body, a leveling mechanism comprising a Worm and connections'betweenthe same and the car-body, and a thrust-bearing for said Worm consistingof a plate having a ball-race on its under side, and. a plate having aninclined upper face to receive the balls, substantially as described,

7 In a combination With a car-body, leveling means therefor comprisinggearing and a thrust-bearing therefor having aplate grooved on its lowerside and a second plate having an inclined upper side upon which theballs rest.

In testimony whereof I aflix my signature in presence of two Witnesses.

ERASTUS S. BENNETT. Witnesses:

MYRoN L. JUSTIN, J. R. Sco'r'r.

